Roncallo, C. P., M. Sánchez de Miguel, and E. . Arranz Freijo. “Maternal-Foetal Bonding: Implications for Psychological Development and Proposal for Early Intervention”. Escritos De Psicología - Psychological Writings, vol. 8, no. 2, Sept. 2015, pp. 14-23, doi:10.24310/espsiescpsi.v8i2.13233.